baber/WOPTO huggingface dataset:
Patent GB-631495-A (GB)
Title: Improvements in or relating to multiple spindle heads for drilling or like machines
IPC: B23B39/16
Filed: 1947-06-26
Abstract: 631,495. Drilling-machines. SLACK & PARR, Ltd., and SLACK, H. A. June 26, 1947, No. 16889. [Class 83 (iii)] A multiple spindle head for drilling and like machines of the type in which rotation of a main drive member is transmitted by cranks to drive a number of separate drill or like spindles has one of the spindles arranged co-axial with the drive member with its crank-pin arranged in the same plane as the other crank-pins and the crank-pin associated with the main drive member. The crank 3 secured to the drive member 1 has a balance weight 21 and a crankpin 4 which is received in a bore 19 of a transmission member 5. One of the tool spindles 13 is arranged co-axial with the member 1 and has a crank-arm 14 lying in the same plane as the crank-arms 12 of the other spindles 9 and is provided with a crank-pin 15 which is received in an axial recess 16 in the crank-pin 4 of the main drive member. The driven spindles are provided with spaced sets of needle rollerbearings 17 and thrust-bearings 18.
Patent GB-781625-A (GB)
Title: Improvements in or relating to apparatus for producing moulds for foundry purposes
IPC: B22C7/04
Filed: 1955-06-13
Abstract: 781,625. Moulding; flasks and supports. BUHRER, E. June 13, 1955 [June 12, 1954], No. 16966/55. Class 83 (1). Apparatus for producing sand-moulds having a number of mould-cavities, each corresponding to an individual pattern, has a number of supports 2, 6, &c., Fig. 1, attached by bolts 36, &c., to a table 1 and having means for supporting the pattern-plates 3, 8, 10, 11, &c., Figs. 1 and 2, with patterns 4, 5, 9, &c. attached thereto. A frame 16 surrounds the supports 2 &c. and has attached thereto a bar 28 carrying a further bar 31 to sub-divide the pattern-plate area. These bars support as many loose bars 32, 33 as are necessary to suit the pattern-plate sizes, and the plates rest on these bars and are held thereon by a plate 17 having bevelled or stepped inner edges overlying the pattern-plates. A pattern 13 may be cemented into a thick plate 12 of plaster, which may be attached to a separate plate 14 or directly to the table 1. Plate 17 is secured to frame 16 by bolts 18, and frame 16 is clamped to table 1 by bolts 24. Alternatively, spring-clips 79, Figs. 11 and 12, with hooked ends, may engage the frame 16 and table 1, as shown, releasing being effected by a hand lever 82 having a cam 83 to expand the loop of the clip. In another form, a hook pivoted to a bell-crank pivoted on table 1 may be clamped to frame 16 by a spring-actuated plunger, releasing being effected by fluid-pressure acting on the plunger (Fig. 13, not shown). In a further modification, a plunger 97, Figs. 14 and 15, in a cylinder in frame 16 is pivoted at 100 to an eye 99 engaging a pin 102 on table 1, the clamping- pressure being supplied by Belleville washers &c. 103. Release is effected by rotating a screw 104 to force grease 106 to space 110 above plunger 97, depressing the plunger and tilting the eye 99 against a stop 112, as shown dotted in Fig. 15, so as to disengage the eye from pin 102. The screw 104 may be replaced by fluidpressure means. The moulding-sand is received in a flask 27, Fig. 1, located on the plate 17 by a cylindrical dowel 20 and a polygonal dowel 22, and stripping from the patterns may be facilitated by two vibrators 51, 52, Fig. 2, attached to frame 16. Heaters such as 7, Fig. 1, may be attached beneath metal patterns.
Patent GB-578349-A (GB)
Title: Improvements in or relating to glazing bars
IPC: E04D3/08
Filed: 1944-09-07
Abstract: 578,349. Glazing bars. WILLIAMS & WILLIAMS, Ltd., WILLIAMS, J. FOX-, and MADDOX, A. M. Sept. 7, 1944, No. 17106. [Class 20 (iii)] A glazing bar A comprises a web having at one or both sides an abutment A<3> against which the glass is held by the arm B<2> of an L-section cover strip, the other arm B of which extends down between the edge of the glass and the web and is formed with an end enlargement B<1> which engages in a socket formed below the plane of the glass and between the web and the abutment A<3>; the cover strip is locked by a wedge D driven between it and the web. In the construction shown the sockets for the ends B<1> of the locking bar are channels formed by ribs A<5> with overhanging tops A<6>. The wedges may be corrugated so that they are resilient.
Patent GB-792650-A (GB)
Title: Starting apparatus for motors which require a supply of decomposable liquid for their operation
Inventor: HALFORD FRANK BERNARD
IPC: F02K9/68
Filed: 1953-06-19
Abstract: 792,650. Gas turbine plant; jet propulsion plant. DE HAVILLAND ENGINE CO., Ltd. May 19, 1954 [June 19, 1953], No. 17117/53. Class 110 (3). [Also in Group XXVIII] Apparatus for starting a motor which requires for its operation a supply of a liquid that is decomposable to provide gaseous decomposition products comprises a cylinder containing sufficient decomposable liquid for the motor during the starting period, a piston movable along the cylinder and adapted when so moved to discharge the liquid from the cylinder to the place of use, and means actuated by gas pressure generated by decomposition of some of the liquid for driving the piston along the cylinder in response to the actuation of a starting control. In the Figure, the starting control assembly 20 comprises a cocking valve 21 and a priming pump 22 both of which are operable through push-rods by a starting handle 23. When the cocking valve 21 is opened it is held open by a spring-loaded catch 37 mounted on a trip-rod 38 which passes through a gland into the main cylinder 13. Operation of the pump 22 then forces hydrogen peroxide through the cocking valve 21, past a non-return valve 19, and into the bottom of the cylinder 13 where it is decomposed by a catalyst 17 and drives the piston 14 upwards. Motion of the piston 14 drives hydrogen peroxide in the cylinder 13 through the outlet 16 to a catalyst element 11 where it is decomposed and drives the turbine 10. The piston 14 also drives a secondary piston 33 which forces hydrogen peroxide contained in the secondary cylinder 32 past the cocking valve 21 to the catalyst 17 and thus maintains the supply of hydrogen peroxide to the catalyst. As the piston 14 nears the end of its stroke it lifts the trip rod 38 and thus allows the cocking valve 21 to close. A relief valve 41 is connected to the lower part of cylinder 13 and is kept closed by the pressure of a spring 42 connected to the cocking valve so that a higher pressure is needed to open the relief valve 41 during starting, when the cocking valve is open. When the turbine 10 is running it drives a pump 12 which supplies the catalyst 11 with hydrogen peroxide and also replenishes the main cylinder 13, the secondary cylinder 32 and the priming pump 22, with hydrogen peroxide. The turbine 10 may be used to drive pumps supplying propellants to a main socket motor (not shown).
Patent GB-890813-A (GB)
Title: Ultrasonic delay line improvements
IPC: C23C14/02
Filed: 1959-05-20
Abstract: 890,813. Soldering. CORNING GLASS WORKS. May 20, 1959 [May 23, 1958], No. 17199/59. Class 83 (4). [Also in Groups XXXVI and XL (b)] The face of a ferro-electric ceramic (e.g. 45% PbTiO 3 -55% PbZrO 3 ) element is provided with a solderable coating which is applied at a temperature below which the polarization of the element would be affected. The element is intended for operation in the shear-mode, the coated face being parallel to the direction of polarization. As shown, an element 15 is cut from an electroded block 11 of ceramic material polarized in the direction of arrows A. Coatings are applied on both broad faces of the element whereby it may be soldered to a delay line 20 and to a tin-lead back electrode. A first 300  layer of platinum or silver is applied by evaporation at room temperature and is baked at 200 C. This is followed by a 500  layer of chromium then a 500  layer of Ni-Cr alloy and finally a 500  layer of gold. These are all applied in vacuo by evaporation at room temperature. The alloy (80% Ni-20% Cr, approximately) layer is graded with the content of chromium highest at the chromium-alloy interface. The delay line is provided with a coating of platinum and indium is applied to the surfaces to be soldered by puddling at 200  C. The surfaces are finally soldered under pressure at about 135 C. A tin-indium solder (65% In-35% Sn) may be used. Specification 800,519 is referred to.
Patent GB-186413-A (GB)
Title: Improved safety apparatus for the automatic disconnection of faulty electric circuit sections
IPC: H02H7/26
Filed: 1921-06-24
Abstract: 186,413. Hochstadter, M. June 24, 1921. Protective arrangements for disconnecting faulty sections of an electric supply circuit, of the kind described in Specification 22045/14 in which auxiliary lines are arranged in parallel with the main supply sections and are maintained at a potential different from the main section by means of transformers having their primaries in the main and secondaries in the auxiliary line, have the transformer ratio of one or both of the transformers smaller than the impedance ratio between the auxiliary line and the main line. Moreover, the transformer at one end of the line section is magnetized by its two windings in the same direction whilst the transformer at the other end is magnetized by its two windings in opposite directions. One arrangement is shown in Fig. 1, in which the secondary 14 is reversed in relation to the secondary 24. Differential relays are arranged with their windings in the main and auxiliary lines so as to remain balanced until a fault occurs in the section as described in the above-mentioned Specification. The arrangement ensures that the ratio between the two conductors while the line is healthy is constant from the smallest load to the heaviest overload. The transformers are arranged to be saturated at a very small load in order to ensure that the auxiliary voltage applied to the auxiliary conductor is constant throughout the range of loads. It is stated that the most favourable arrangement consists in making the first transformer ratio smaller than half the impedance ratio of the two lines and giving to the other transformer a smaller number of primary turns and a greater number of secondary turns than the corresponding turns of the first. Instead of adjusting the turns, the respective magnetic circuits of the transformers may be varied and the windings may be bridged by resistances. as shown in Fig. 5, or by capacities calculated to give the desired relations. Specification 169,149 also is referred to.
Patent GB-319254-A (GB)
Title: Improvements in hinges for boxes or cases
IPC: A45C13/00
Filed: 1928-06-15
Abstract: 319,254. Schwitzky, H. June 15, 1928. Spectacle cases.-The edge of a lid of a metal case is bent in a single piece to house a hinge pin and to form a projection 10 to anchor a spring, and the edge of the box is bent at 8, 8<1> to support the ends of the pin and at 9 to anchor the spring. The portions 9, 10 have strengthening pieces and the supports 8, 8<1> have lateral extensions 5<2>, 5<3> over which the edge of the box is pressed. The spring may be helical or formed of two cross wires one end of each being pivotally housed in sockets 11, 11<1> and the other hooked over the part 10.
Patent GB-397276-A (GB)
Title: Process for the production of driers of improved stability and solubility
IPC: C09F9/00
Filed: 1932-06-20
Abstract: Alkaline-earth metal driers are stabilized and their solubility in organic solvents is improved by the addition of up to 10 per cent of solid saturated fatty acids, or solid free carboxylic acids of the lower members of the olefine or aromatic series, their substitution products, which may have the methyl, hydroxy, chloro, nitro or sulpho group at the nucleus, and derivatives with at least one free carboxylic group in the side chain.  The stabilizing agents are added immediately after the manufacture of the drier, or in cases where the drier is produced by the action of an alkali salt of the drier acid on a salt of the drier metal, during the course of precipitation if desired.  Mixtures of stabilizers may be used and be incorporated with the molten drier, before or after removal of water, maintained say at 130 DEG  C.  The following stabilizers are referred to: stearic acid, mixed palmitic and benzoic acids, mixed crotonic and arachic acids, mixed hippuric and salicylic acids, mixed stearic, mandelic, and cinnamic acids, mixed anthranilic and hydrocyinamic acids, and mixed aminophenylacetic and benzoylbenzoic acids.ALSO:Heavy metal, earth metal, or alkaline-earth metal driers are stabilized and their solubility in organic solvents is improved by the addition of up to 10 per cent of solid saturated fatty acids, or solid free carboxylic acids of the lower members of the p olefinic or aromatic series, their substitution products which may have the methyl, hydroxy, chloro, nitro, or sulpho group at the nucleus and derivatives with at least one free carboxylic group in the side chain.  The stabilizing agents are added immediately after the manufacture of the drier or, in cases when the drier is produced by the action of an alkali salt of the drier acid on a salt of the drier metal, during the course of precipitation if desired.  Mixtures of stabilizers may be used and be incorporated with the molten drier, before or after removal of residual water, maintained say at 130 DEG C.  In examples, cobalt naphthenate is stabilized by stearic acid; cobalt-manganese naphthenate by a mixture of palmitic and benzoic acids; cobalt-cerium resinate by a mixture of crotonic and arachic acids; cobalt-zinc-manganese naphthenate by a mixture of hippuric and salicylic acids; manganese naphthenate by a mixture of stearic, mandelic and cinnamic acids; cobalt-lead linoleate by a mixture of anthranilic and hydrocinnamic acids: and the lead - manganese salts of napthenic acid and soya oil fatty acids by a mixture of aminophenylacetic and bonzoylbenzoic acids.
Patent GB-463397-A (GB)
Title: Improvements in branch connections for fluid conduits
IPC: F16L41/02
Filed: 1935-06-24
Abstract: 463,397. Connecting branches to mains. BABCOCK & WILCOX, Ltd. June 24, 1935, No. 17506. Convention date, June 23, 1934. [Classes 99 (i) and 99 (ii)] A branch connection for connecting a branch conduit 12 to 'a high-pressure fluid conduit, formed of cylindrical sections 10, comprises a main conduit connection section 22 having a portion cut away by a plane parallel to its axis, the length of the section and the width of the cut-away portion being greater than the diameter of the branch conduit, and a junction section 28. The latter has an outlet corresponding to the diameter of the branch 12 and an expanded body portion which mates with the main section 22 and is joined thereto along the straight axial edges which are left by the cutaway portion and are preferably reinforced by welded-on beams 44. The connection is supported by a pair of curved truss members 50 which are rigidly connected at their ends to the reinforcing beams 44 and are spaced from the junction section, each of said truss members being spring mounted at 56 upon pedestals 52, 54 located on opposite sides of the branch tunnel 15. The junction section may be reinforced by beams 48 at right angles to the beams 44.
Patent GB-1120832-A (GB)
Title: Preparation of a difluoramino compound
Inventor: PARKER JOHN BROWN
IPC: C07D233/52
Filed: 1965-04-28
Abstract: 4,5 - Bis - (difluoramino) imidazolidin - 2 - one is prepared by reacting 1,2-bis-(difluoroamino) ethylene glycol with urea in an inert atmosphere in presence of a strongly water-absorbent or strongly water-reactive substance.  Reaction may take place at -23 DEG  C. by refluxing with difluoramino in the presence of fluorosulphonic acid or 96% sulphuric acid using methylene chloride as solvent and nitrogen as inert atmosphere.  The 1,2-bis-(difluoroamino) ethylene glycol may be made by reaction of glyoxal and difluoramine in situ.
Patent GB-209025-A (GB)
IPC: C22F1/00
Filed: 1923-07-11
Abstract: 209,025. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. f³r Elektrische Gl³hlampen). Dec. 23, 1922, [Convention date]. Addition to 183,120, [Class 72, Iron &c.]. Filaments.-Tungsten filaments are made from ingots of macrocryatalline structure prepared by the process described in the parent Specification, the ingots being worked so that the crystals are broken up and the fragments extended and welded together so that a wire of fibrous structure is produced. Specification 23499/09 is referred to.
Patent GB-742507-A (GB)
Title: Improvements in or relating to air-powered hydraulic pumps
Inventor: MACKENZIE KENNETH ORD
IPC: F03C1/03
Filed: 1953-07-01
Abstract: 742,507. Compressed air engines; valve gear. MADAN & CO., Ltd., C. S. May 20, 1954 [July 1, 1953], No. 18190/53. Classes 122(2) and 122(3) [Also in Group XXVIII] A reciprocating pump for liquids is actuated by a compressed air engine comprising mechanically coupled oppositely acting main and return pistons 13, 30 and cylinders 10, 26, the return piston 30 being of smaller area than the main piston 13, means for supplying compressed air to the operative end of the return cylinder 26 which communicates through a restricted air duct with the operative end of the main cylinder 10, and an exhaust valve 35 in the main cylinder actuated by reciprocating parts of the engine. The pistons are coupled by a common piston rod 29 that passes with a small clearance through a bore 24 in a boss 23 on the main cylinder cover 12 to which the cylinder 26 is connected and is provided with a compressed air inlet 28 communicating both with the bore 24 and the cylinder 26. An extension 31 of the rod 29 extends through the open end of the return cylinder 26 and supports a cup 32 having a flange 33 adapted to contact a spring 38 on the stem 36 of the exhaust valve 35. The space under the main piston 13 is vented through a hole 39 and the lower end 11 of the cylinder 10 is formed as a pump block having a bore 15 in which a piston 14, attached to the piston 13. operates; spring-loaded ball valves 19, 20 being provided in the inlet and delivery passages 17. 18. In operation, compressed air supplied at the inlet 28 enters both cylinders and moves the pistons downwards until the flange 33 opens the exhaust valve 35 to release the pressure above the main.piston 13 and, since the clearance in bore 24 allows only a restricted flow of air, the pressure on the piston 30 returns the pistons until the piston 13 contacts and closes the exhaust valve 35 and the cycle recommences. To increase the speed of the downward stroke of the pistons a differential pressure valve (not shown), may be provided which opens to supply compressed air into the cylinder 10, when the air passing through the clearance in bore 24 has built up sufficient pressure in the cylinder 10 and automatically closes when the exhaust valve 35 is unseated.
Patent GB-679839-A (GB)
Title: Improvements in and relating to thermo-mechanical control systems
IPC: H05B31/00
Filed: 1949-07-11
Abstract: 679,839. Thermal switches; interrupters. GRETENER, E. July 11, 1949. No. 18271/49. Class 38 (v). [Also in Groups XXIV and XXXV] A thermo mechanical control system comprises a temperature sensitive device, e.g. a bimetal strip, a control lever and a separate source of mechanical energy the arrangement being such that the control lever is influenced on the one hand by the bimetal strip and on the other by the source of mechanical energy and may assume, under the action of a spring one of two definite positions. In the embodiment shown in Fig. 1 the feed of arc in a carbon lamp is regulated, the bimetal strip 1 being sensitive to heat radiation from the positive crater. Excessive heat deflects the strip in direction 19 to bear against the lever 10 so that its end 15 bears against contacts 9 to cause energization of a motor 7 to feed the electrode forward. The radiation on the strip 1 then diminishes owing to movement of the electrode. The source of mechanical energy 12, e.g. a rotating cam with projections 13, continuously tends to restore the lever 10 to its inoperative position. In an alternative arrangement (Fig. 2) the carbon feed may be mechanically initiated by means of a clutch arrangement. The bimetal strip consists of two strips 101, 21, to compensate for ambient temperature variation, with a shield 24 between them so that only the strip 101 is affected by the radiation from the arc 103. The lever 110 normally co-operates with a ratchet wheel 115 rotatably mounted on the cam 112 shaft but connected to electrode drive gearing through mechanical links 35-38, 51, 52, 53, 118. The lever 110 and ratchet wheel 115 act as a clutch and the electrode drive is inoperative until the strips are deflected to move the lever 110 out of co-operation with the ratchet, thus allowing the electrode to be driven forward. The lever 110 is subjected to a continuous testing action by the projections 113 on the cam 112. To compensate for ambient temperature variations the bimetal strip may consist of a single strip twisted through 180 degrees. The sensitivity of the system may be increased by increasing the contrast between the edge of the positive electrode and the arc focussed on the bimetal strip by painting the strip red, and/or by inserting suitable filters in the beam of radiation, Fig. 7 (not shown).
Patent GB-439794-A (GB)
Title: Automatic reverse motion for mechanical looms
IPC: D03D51/00
Filed: 1935-06-26
Abstract: 439,794. Loom stopping and reversing mechanism. SACHSISCHE WEBSTUHLFABRIK, 8, Fischweg, Chemnitz, Germany. June 26, 1935, No. 18309. Convention date, July 3, 1934. [Class 142 (i)] When the weft breaks, the lay when moving forwardly operates a device to put the loom in reverse, the lay again operating the device as it moves back to disconnect the reverse drive and stop the loom. Means is also provided to prevent the starting handle from being operated while the loom is in reverse, and for disconnecting the take-up and pattern operating catches. When the weft breaks, a lever 16 moves a lever 18 on the lay into the path of a draw rod 20 connected to a lever 21 having an arm 22 adapted to engage an arm on a rod carrying the disengaging crank 6 which is thereby turned and a rod 5 is operated to withdraw the cone clutch 2, 3. At the same time, a brake is applied and a reversely-driven cone clutch 13 loose on the driving shaft 1 is moved into engagement with a clutch 14 by link and lever connections from the draw rod 20. When the lay moves backwardly, it engages a stop 35 on the rod 20, whereby the clutch 13, 14 is disconnected, and the loom stops. A cam 36 on the draw rod operates link- and-lever mechanism for stopping the take-up and pattern barrel operating devices.